Abstract
A method for analyzing the carbohydrate composition of glycoproteins and similar glycoconjugates by methanolysis followed by revers-phase high-pressure liquid chromatography of the perbenzoylated methyl glycosides has been developed. As described, the method is capable of quantifying sugars in the 1- to 10-nmol range while further optimization of procedures may increase the usable sensitivity by a factor of 10 or greater. Improved yields of the sugar derivatives have been achieved by incorporating several modifications of the original methanolysis procedure. This, together with the use of high-pressure liquid chromatography rather than gas chromatography for separating the sugar derivatives, eliminates the need for empirically determined molar response ratios.
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